Servo-type capsule-equipped instrument

Details Servo-type capsule-equipped instrument Servo-type capsule-equipped instrument

1981-06-02

1983-09-13

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Null balance type

73387, 73705, G01L 712, G01L 900

Patent

active

044035128

ABSTRACT:
A servo instrument, particularly a servo altimeter, with a minimum of display error. The instrument comprises a capsule assembly, a sector adapted for rotation corresponding to the displacement of the capsule assembly, a photosensor for producing an output showing its angular position relative to the sector, a support for rotating the photosensor while supporting it adjustably in a direction of tracing the sector, a cam adapted to make the amount of the adjustment of the photosensor variable by the position of the support, a motor, means for generating a signal showing the rotating positional angle of the motor, and an amplifier for amplifying the output of the photosensor and driving the motor so as to maintain the output of the photosensor constant.

REFERENCES:
patent: 3286529 (1966-11-01), Damrel, Jr. et al.
patent: 3867680 (1975-02-01), King
patent: 4054052 (1977-10-01), Nakahama

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